Breech-loading gun



(No Model.) 2 Sheets-Sheet 1. A. T. BROWN.

BREEGH LOADING GUN.

Patented M31220, 1883.

(No Model.) 2 Sheets-Sheet 2. A. T. BROWN.

BREEOH LOADING GUN. No. 274,435.- Patented Mar. 20,1883.

NlTED STATES PATENT @rrrcat ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

BREECH-LOADING GUN.

SPECIFICATION forming part of Letters Patent No. 274,485, dated March20, 1883.

- Application filed February 9,1883. (No model.)

To all whom it may concern Be it known that I, ALEXANDER T. BROWN, ofSyracuse, in the county of Onondaga and State of New York, have inventedcertain new and useful Improvements in Breech-Loading Fire-Arms, ofwhich the following is a specification, reference being bad to theaccompanying drawings, in which- Figure l is a view of the breech of thegun with the stock removed and the barrelslocked; Fig. 2, a longitudinalsection of the breechblock and action with the stock and barrelsremoved; Fig. 3, a side view of the locking device removed from thebreech-block, with the extension-rib in position for locking; Fig. 4, arear perspective of the rotary lock and firing-pins separated from thebreech block; Fig. 5, a longitudinal section of Fig. 1; Fig. 6, a topplan view of the breech block; Fig. 7, details of the extracting andjoint-check mechanism.

My invention relates to that class of breechloading fire-arms in whichthe mechanism for locking the barrels when the gun is closed is operatedby a top lever.

The objects of it are, first, to createa looking mechanism in which allhorizontally-sliding bolts and all notches in the lug beneath thebarrels to receive the locking-bolt are dispensed with second, to throwback the firingpins by the locking mechanism when the gun is unlocked;third,to eject the extractorby an eccentric in the lug beneath thebarrels, and also to catch the barrels when broken down, and relieve thehinge-bolt from the dropping strain; fourth, to keep the rotary oroscillating lock open when the gun is unlocked and broken down ready to--receive the extensionrih, until the rib in its downward movement inclosing the gun reaches or nearly reaches the bottom of the rib-slot inthe breech-block and in the rotary lock fifth, to lock the gun by arotary or oscillating lock engaging with an extension-rib; sixth, tolock the gun by a rotary lock engaging with an extension-rib andactuated by a lever; seventh, tocreate a cylindrical rotary lock slottedto receive an extension-rib; eighth, to actuate and control the actionby a springlocated in a slot within the breech-block closed by thetrigger-plate.

It is constructed as follows:

A is the breech-block.

B is the barrel or barrels of the gun. U is the extension-rib,constructed rectangular in section, and with the recess a in the 7 backend, and the mortise I) through the rib horizontally. This rib fitsclosely into a rectangularslot or mortise, d, in the breech-block.

D is the rotary oroscillating lock, constructed in the form of acylinder, closed at one end and fitting loosely in a hole drilled fromthe back of the breech-block, under the tang, forward horizontally untilit is deep enough to receive the rotary lock. Through the wall of thislock two slots, 0 .r,-connected at right angles to each other are out,together making a T-shaped aperture, as shown in the drawings. That slot0 corresponding to the top of the T is longitudinal of the rotary lock,and of the same width as the rib-slotin the breech- 7o block. The slot00 is circumferential, and of such width as to receive freely the bar 3between the mortise and recess a in the rib G and the tenon in themortise b. The shell of the cylinder of the lock is of almost the samethickness as the heightof the recess aor mortise b. r

E is-the lever by which the lock is operated, mounted upon the tang F ofthe breech-block and connected to the upright rodf, standing 8:) alittle back of the breech-block, stepped at its lower end into thetrigger-plate it, its upper end passing up through the tang.

His a yoke with an arm attached, which y'oke fits upon the rodf, and isfastened to it 8 by a pivotal rivet or screw, as shown in the drawings.The outer end of thisyoke-arm fits freely in a hole in the base of therotary lock D, as shown in Figs. 1, 2, and 4.

I is an upright piu,-having a shoulder on one side, fitted into a holein the breech-block in the bottom of the rib-slot d, and having a springbehind it, as shown in Fig. 2. Arecess is cut in the edge of thecylinder of the rotary lock large enough to receive the shoulder of thepin I. Upon the lower end of the rodfis a collar, 2', having a shoulderor lug on one side; and 7c is a spring fitting into a recess in thebottom of the breech-block, just above the triggerplate h, which closesthe bottom of the too recess.

K K are the firing-pins, having rods or pins 1 fitted into the sides oftheir heads. The

points of these rods 1 fit into cam-recesses m and opening at aim theslot in the frame part of one on each side of the lock D in itsperiphery I adjacent to the base. These recesses m are straight on thatside longitudinal of the lockcylinder D and curved on the other, asshown in Figs. 2, 3, and 4.

M is an eccentric having a hole drilledin its periphery to receive theplug n and the spring behind it, as shown in Fig. 5. This plug a ishollow in its inner end to receive one end of the spring shown, and hasthe shoulder 0 on its outer end. This shoulder is square on its frontand two adjacent sides, while its top is rounded off from the frontbackward. In the edges of theeccentric are the bearing-pins pp. Thiseccentric lies in a hole drilled crosswise through the lug S beneath thebarrels, and is of the same width as the lug. An opening is cut fromthis hole through into the recess 'in which the extractor-pin lies, andlarge enough to permit the shoulder 0 to pass through it into theextractor-recess and work freely.

N is the extractor, fitted into a recess between andbeneath the barrelsin the usual manner.

R is the hinge-bolt.

W is an L-shaped slot cut in the walls of the breech-block, whichreceives the lug S. This slot is cut in both walls, first downward, andthen forward at right angles toward the front end of the frame. Thisslot is large or wide enough to'freely receive the bearing-pins p on theeccentric M.

It is operated as follows: When the parts are put together and the gunis closed and locked, the operation of unlocking the gun is as follows:The end of the lever E is pressed to the right. This revolves the rod f,carrying with it the yoke H and its arm. As it revolves the yoke-armbears againstthe side of the hole in the base of the rotary lock D andcauses it to rotate until the rib 0 comes against the unbroken side ofthe upper part of the T- slotthat is to say, into the slot ereleasingthe mortise b and recess a from the tenons and slot 00. Then the barrelsare ready to be broken down, as shown in Fig. 5. At the same time thatthe rib 0 reaches the releasing-point the'shoulder on the pin I isthrown by the spring behind the pin into and engages with the recess inthe edge of the rotary look, as shown in Fig. 3; and by such engagementthe rotary lock D is held in the unlocked position, the tension on thespring it, created by the revolution of the rodf throwing the shoulderupon the collar 6 against the extremity of the spring, is retained, andthe lever-arm is held over to the right. In this position the upper endof the rod I above the shoulder projects upward into the open end of therotary lock D, as seen in Fig. 3. When the gun is closed and locked thepins 19 on the eccentric M lie in the slot W toward its center; theextractor N is back in its recess, with the front side of the shoulder 0of the plug a behind it and bearing against it. This eccentric M andextractor N remain stationary until the barrels are unlocked. Then, asthe gun is opened and the lug S raised, the pins 0, bearing against theupper side of the slot W' forward of the open part a, tend to retard themovement of the barrels, and would wholly retard them were it not thatthis retention imparts a rotary motion to the eccentric M, which permitsthe upward movement of that portion of the barrels behind the hinge andadjacent to the eccentric. At the same time this motion of the eccentricthrows the shoulder 0 forward against and ejects the extractor N. Thismotion continues, and the barrels continue to rise at that point untilthe edge of the plug 01. in front of the shoulder 0 comes against thewall of the recess within which the eccentric M lies until the point ofthe shoulder 0 disengages from the extractor N, when the shoulder 0comes against the lug S, as shown in Fig. 5, and catches the barrels orstops their movement entirely, all sudden strain being thus taken offfrom the hinge-bolt It. At the same time, while the movement of thelever E sidewise causes the rotation of the rotary lock D, this rotationbrings the curved side of the recess m to bear against each of the rodsI attached to the firing-pins K, and as the rotation continues forcesthe pins along the curved face backward toward the base of the rotarylock D. In their backward movement the rodsl carry with them thefiring-pins K, withdrawing them far enough so that they are out of theway of the barrels and extractor when the gun is opened.-

- The operation of closing or locking of the gun is as follows: The ribG is forced down into the slot d in the breech and the slot 0 in therotary lock D until it strikes the upper end of the pin I. As the rib isfurther forced down it depresses or pushes the pin I downward until justabout the time when the rib reaches the bottom of the slot d on thelower side of the inside of the rotary lock D, the shoulder on the pin Iescapes from its recess, and the released rotary lock D, through thetension upon the spring 76, is rotated, so that the slot 00 receives thebar 3 between the recess a and the mortise b, and the tenons on eachside of the slot as fill the recess a and mortise b, and the lever Eflies back to its normal position. All of the parts take practically thepositions shown in Fig. 2. At the same time the extractor is forcedback, and as the lug S descends the point of the shoulder o in the plug1?. of the eccentric M is released from the lug, slips behind the end ofthe extractor, and by the motion of the eccentric the plug it finallyassumes nearly an upright position when the gun is closed, the springbehind the plug forcing the point of the shoulder 0 upward into theextractor-recess behind the extractor. gun is open the extractor can bepushed back IIS It will be readily seen that when the.

I axis in the direction of the axis of the gun,

and having the T-shaped slot combined with the extension on thebarrels,substantially as stated;

3. A locking device for a breech-loading fire-arm, consisting of arotary lock actuated by the operation of a top lever connected to anupright revolving post behind the breechblock, and controlled by aspring, in combination with an extension-rib, substantially as doscribed.

4. The oscillating locking device having cam-surfaces, as described,combined with firing-pins having a bearing on said camsurfaces,substantially as described.

5. In combination with the oscillating locking-bolt and rib, thespring-catch adapted to engage positively with the lockin g device untilreleased by the rib, as set forth.

6. The oscillating locking-bolt having notch, the spring-pin engagingsaid bolt positively by entering the notch, and the rib on the barrelsoperating to disengage said pin, substantially as described.

7. The oscillating bolt slotted and notched, as described, thespring-pin, the operating-lever, and the extension on the barrels, allin combination, substantially as stated.

8. The lug on the barrels containing oscillating pin, as M, which isprovided with eccentricextensions engaging in slots in the stock orframe to operate as a stop, as stated.

9. The lug on the barrels containing the oscillating pin li'avingeccentric extensions eugaging slots in the stock or frame, combined withthe cartridge-ejector by suitable connect ing mechanism, substantiallyas shown and set forth.

In witness whereof I have hereunto set my hand this 2d day of February,1883.

ALEXANDER '1. BROWN.

In presence of- C. W. SMITH, L. 0. SMITH.

